An ABI encoder and a Hall sensor can be combined to function as a single encoder for commutation. This combines the benefits of a high resolution angle from the ABI encoder, with the absolute electrical position provided by the Hall sensor.

When the feature is started, the Hall sensor is sampled and it is checked if it’s in a valid state. If an invalid hall state [0, 0, 0] or [1, 1, 1] is found, an error ‘HallSeq’ is raised, and the connections should be checked.

Cable errors can lead to problems: if only one Hall sensor is disconnected or damaged, or if the phase signals are reversed, the problem will not be detected. Running the motor with Hall set as the only Commutation sensor can be done to ensure the integrity and proper connection of the Hall signals before integrating the ABI encoder.

If no error is raised, the initial electrical angle is estimated based on the Hall sensors, and the Hall sensors are not sampled again. As soon as the incremental encoder passes the index, the service realigns the electrical angle to the formerly saved precise value.

Europe (HQ)

Synapticon GmbH
Daimlerstraße 26
71101 Schönaich
Germany

+49 7031 / 30 478 -0

sales@synapticon.com

Americas

Synapticon Inc.
303 Twin Dolphin Drive
Redwood City 94065
California

+1 (650) 632 4599

sales-us@synapticon.com

Asia

Synapticon Co. Ltd.
518 Shenchang Road
Shanghai 201106
China

+86 400 1600 229

sales-ap@synapticon.com

About

Synapticon is a technology company focusing on the transition band
between advanced software and electromechanics. The company provides a
comprehensive portfolio of motion control-related technology to robot
and machinery OEMs.